Java中的Java .net.ProtocolFamily 类

ProtocolFamily 是一个Java接口。 Java.net.ProtocolFamily代表一系列通信协议。 Java.net.StandardProtocolFamily实现了 ProtocolFamily 接口。

public interface ProtocolFamily 

Java.net.ProtocolFamily 的方法

Java.net.ProtocolFamily接口只包含一种方法：

S.No.	Method	Description	Return Type
1.	name()	name() method returns the name of the protocol family	String

ProtocolFamily 接口的使用

S.No.	Package	Modifier and Type	Name	Description
1.	java.net	class	StandardProtocolFamily	StandardProtocolFamily class defines the standard families of communication protocols.
2.	java.nio.channels	static DatagramChannel	DatagramChannel.open(ProtocolFamily family)	DatagramChannel.open() static method opens a datagram channel.
3.	java.nio.channels.spi	abstract DatagramChannel	SelectorProvider.openDatagramChannel( ProtocolFamily family)	SelectorProvider.openDatagramChannel Opens a datagram channel.

用于更好地理解 ProtocolFamily 接口的Java程序

Java

// Java Program to get Protocol
// family for an IP Address
  
// import Guava library
import com.google.common.net.InetAddresses;
import java.io.*;
import java.net.*;
  
class GFG {
    public static void main(String[] args)
    {
        try {
            // to get the ip address of
            InetAddress ip
                = InetAddress.getByName("45.22.30.39");
            System.out.println("Host Name is "
                               + ip.getHostName());
  
            // getProtocolFamily() will check and return the
            // protocol family of the given IP
            ProtocolFamily protocolFamily
                = getProtocolFamily(ip);
  
            System.out.println("Protocol family of the "
                               + ip.getHostName() + " is "
                               + protocolFamily);
        }
        catch (Exception e) {
            System.out.println("Some exception"
                               + e.getMessage());
        }
    }
  
    public static ProtocolFamily
    getProtocolFamily(InetAddress inetAddress)
    {
        // to check if address is valid or not
        if (InetAddresses.isInetAddress(
                inetAddress.getHostName())) {
            // if address is valid
            // will return the protocol family of the
            // address
            return StandardProtocolFamily.INET;
        }
        else {
            // address is not valid
            System.out.println(
                "Address " + inetAddress
                + "is invalid hence can't determine the protocol family");
        }
        return StandardProtocolFamily.INET;
    }
}

输出

Host Name is 45.22.30.39
Protocol family of the 45.22.30.39 is INET